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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.common.lucene;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.lucene.search.*;
import java.io.IOException;
/**
*
*/
public class MinimumScoreCollector extends SimpleCollector {
private final Collector collector;
private final float minimumScore;
private Scorer scorer;
private LeafCollector leafCollector;
public MinimumScoreCollector(Collector collector, float minimumScore) {
this.collector = collector;
this.minimumScore = minimumScore;
}
@Override
public void setScorer(Scorer scorer) throws IOException {
if (!(scorer instanceof ScoreCachingWrappingScorer)) {
scorer = new ScoreCachingWrappingScorer(scorer);
}
this.scorer = scorer;
leafCollector.setScorer(scorer);
}
@Override
public void collect(int doc) throws IOException {
if (scorer.score() >= minimumScore) {
leafCollector.collect(doc);
}
}
@Override
public void doSetNextReader(LeafReaderContext context) throws IOException {
leafCollector = collector.getLeafCollector(context);
}
@Override
public boolean needsScores() {
return true;
}
}
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